Thread Cutting Screw Finish Phosphate Material Steel Head Style Flat Drive Torx Thread Size 1/4 In.-20 Fastener Length 1 1/4 in Head Type Flat Head and Washer Height 0.16 in Drive Size T27 Dimensional Standards ASME B18.6.4 System of Measurement Inch Head Height 0.16 in Head Width 0.52 in Package Quantity 100